watchdog: sch56xx: Use watchdog core

Convert sch56xx drivers to the generic watchdog core.

Note this patch depends on the "watchdog: Add multiple device support" patch
from Alan Cox.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Wim Van Sebroeck <wim@iguana.be>

diff --cc drivers/hwmon/sch5627.c
Simple merge

diff --cc drivers/hwmon/sch5636.c
Simple merge

diff --cc drivers/hwmon/sch56xx-common.c
Simple merge

diff --cc drivers/hwmon/sch56xx-common.h
Simple merge